Pump.



HARVEY N. ROTHWEILER, 0F SEATTLE, WASHINGTON.

PUMP.

. Specification of Letters Patent.

Patented Apr. 30, 191.

Application filed January 3, 1917. Serial No. 140,330.

delivering the liquid or returning the surplus to the pump barrel, thereby obviating waste due to the so-called drip.

The invention consists in the novel construction of an adjustably movable spout and in the peculiar manner of coupling it to a discharge pipe.

In the accompanying drawings, Figure 1 is a side elevational view of a pump embodying the present invention.

Fig. 2 is a vertical sectional view, showing a pump discharge pipe with my improved spout connected therewith, said spout being shown in a diierent relative position from which it is illustrated in F ig. 1.

The reference numeral 5 designates a pump cylinder or barrel having connected therewith a suction pipe 6 and a delivery pipe 7. The pump piston, indicated by broken lines 8, is operatedb-y a hand lever 9 through the agency of a piston-rod 10.

rllhe pump delivery pipe 7 is bent or formed to provide an end 71 at a slightly inclined angle from horizontal to afford drainage from the discharging end of the pipe back into the pump barrel. 'Ihe pump spout consists of a chambered head 11 having outlets 12 and 18 disposed in substantially rectangular relations with each other. The outlet 12 is counter-bored to t over the outer end of the pipe 7 and aord an annular shoulder 14 against which the pipe extremity is held by means of a helical spring 15. This spring is located within the pipe, as shown in Fig. 2, and has its ends 16 and 17 respectively connected to the pipe and spout preferably by being extended through apertures of the referred-to parts and riveted or otherwise secured thereto.

The spring and its connection with both the pipe and spout are disposed to be in alinement with the axis of the interfltting portions of the same, thereby enabling the spout to be rotated to direct the outlet 13 downwardly or upwardly according to whether the liquid is to be withdrawn or the surplus is to be allowed to drain back through the delivery pipe. y

For conveniently regulating the spout, I

provide the same with a relatively heavy arm 18 arranged to act as a counterweight with respect to the opposing outlet part.

In practice, the spring is adjusted to furnish frictional engagement between the spout shoulder 14 and the abutting end of pipe 7 to hold the spout in upright and reversed positions. Should the strength of the spring weaken, it may be increased by turning the spout one or more times in the proper rotary direction.

The strength of the spring, however, should not be suiiicient to overcome the efect of the weight of the arm 18 to turn the spout from the Fig. 2 position when the axes thereof are swung out of vertical.

The combination with a pump discharge pipe having a substantially horizontally disposed delivery end, a one-piece spout having a passage extending therethrough and with its branches in rectangular relations, one of said branches being counterbored slidably to receive the end of said pipe and aiiord an annular shoulder, a helical spring connected to the spout and the pipe for rotatably coupling the same and yieldingly maintaining said shoulder in juxtaposition with the pipe extremity, the spring being contained within the pipe and spout and having the tension thereon controlled by the rotary movement of the spout.

Signed at Seattle, Washington, this 28th day of December, 1916.

HARVEY N. ROTHWEILER.

Witness:

E. PETERSON.

Copies of this patent may be obtained for five cents each, by addressing theommissioner of Eatentu, Washington, D. C. 

